Power-transmission device



March 23 1926.

1,5??fi62 w. T. HANNA POWER TRANSMISSION DEVI CE Original Filed July 6,1921 3 Sheets-Sheet 1 QH'UQTTtO'L F 1 WILLIAM 7. HANNA,

March 23 L926.

W. T. HANNA POWER TRANSMISSION DEVICE 1921 3 Sheets-Sheet 2 OrigihalFiled July 6 Elnuuwrfot WILL/AM 7. HANNA March 23 1926 1,577,462 w. T.HANNA POWER TRANSMISSION DEVICE Original Filed July 6, 1921 3Sheets-Sheet 5 [T71 l J M 62 as! I gyvve'nfop WILLIAM T HAN/M,

attorney Patented Mar. 23, 1926.

UNITED STATES WILLIAM T. HANNA,

or CINCINNATI, OHIO.

POWER-TRANSMISSION DEVICE.

Original application filed July 6, 1921, Serial No. 482,790. Divided andthis application filed May 20,

1924. Serial No. 714,687.

To all whomit may concern:

Be it known that I, VVlLLIAM T. HANNA, a citizen of the United States ofAmerica, and a resident of Cincinnati, in the county of Hamilton andState of Ohio, have invented a new and useful Improvement in aPower-Transmission Device, of which the following is a specification.

This application is a divisional applica tion of my application Serial#482,790, filed July 6, 1921.

An object of my invention is to provide a power transmission device of atype which is especially useful in driving locomotive stoking devices.Another object of my invention is to pro- Vide a device of this typewherein it is possible to readily dissociateparts thereof, in order toeffect repairs orreplacements.

Another object of my invention is to provide a device of this kindwherein continuous rotary motion is imparted to a stoker mechanism.

Another object of my invention is to provide a device of this kind whichmay be readily reversed or totally stopped.

These and other objects are attained by the means described herein anddisclosed in the accompanying drawings, in which:

Fig. 1 is a plan view of the power transmi ssion mechanism embodying myinvention.

Fig. 2 is a sectional view on line 22 of Fig. 1.

Fig. 3 is a sectional view on line 3-3 of Fig. 1.

Fig. 4 is a. sectional view on line 4.4 of Fig. 1.

Fig. 5 is a sectional view taken on line 5 5 of Fig. 1.

The power transmission device of my in vention is adapted to be drivenfrom a.

suitable driving mechanism such as an engine 10 of the reciprocatingtype which is operatively connected to a rack 11 which extends into acasing 12 of the transmission mechanism. The rack 11 is slidably mountedupon a rack housing 13, which eX- tends removably into the housingtransversely thereto. The rack housing 13 has a flange 1 1- formed atits outer end whereby the rack housing is removably mounted upon thecylinder 15 of the engine 10. A second flange 16 is formed on the rackhousing, said second flange being removably mounted upon the flange 17of the casing 12. Suitable bolts are used to secure the several flangesone upon the other. rack housing has a longitudinal way 18 formedtherein, within which way the rack may be longitudinally reciprocated,by means of the piston rod 19 of the engine. The engine may be of areversible type, whereby the cylinder on each side of the pistonthereof, may be exhausted at will. An engine of this type renders thepower transmission mechanism more effective for a re versal of movementin an emergency. The transmission mechanism comprises the easing 12transversely to which casing, and through the lower portion of whichextends the rack housing'13. Parallel shafts 20 and 21 are revolublymounted upon the housing and extend transversely to the line of movementof the rack 11. The ends of the shaft 21 are cylindrical and have formedbetween them a section 22, substantially square in cross section. Theone cylindrical end 23 is of a diameter greater than the section 22, andthe other cylindrical portion of the shaft. The enlarged portion 23 ismounted upon a suitable bearing mounted on the cas 111g, shaft, whichreduced portion is in a like manner mounted upon a bearing mounted uponthe casing, serve to revolubly mount the shaft upon the casing '12. Thecentral portion of the shaft is disposed within the chamber 24, formedwithin the casing 12, and the ends of the shaft extend beyond the casingwalls. The reduced portion of the shaft has a collar 25 mounted upon itand the enlarged portion carries a coupling 26, the collar and couplingcomprising means for limiting the lateral movement of the shaft.Interiorly to the chamber 24,. and mounted The and with the reducedportion of such upon the shaft 21, is a sleeve 27, having a centralportion 28 upon which is mounted a toothed clutch member 29. The centralportion 28 may be provided with keys 280 upon which the clutch members29 and 39 may be splined. A cylindrical portion is formed on the sleeveon each side of the central portion 28, and upon the cylindricalportions aremounted the clutch gears 30 and 31. The gear 30 is keyed tothe sleeve. A bushing 32 is placed into the sleeve and provides abearing for the sleeve upon the shaft 21.

The gear 31 is loosely mounted upon the sleeve and engages the rack 11.The gear 31 has formed upon its one side a series of teeth 33, adaptedto intermesh with the teeth formed on the clutch member 29, when thegear 31 moves in a given direction, and to disengage themselves from theteeth in the clutch member when the gear 31 moves in an oppositedirection. The sleeve has formed upon its end, into which the bushing 32is passed, a series of clutch teeth 3 A series of complementary clutchteeth 35 formed on the yoke 36 slidably mounted upon the square portion22 of the shaft 21, are adapted to intermesh with clutch teeth 3 1.

The shaft 20 has mounted upon it a gear 37 corresponding to the gear 30,and a gear 38 corresponding to the gear 31. A sleeve is revolublymounted upon the shaft 20 in the same manner as is the sleeve 27 mountedon the shaft 21. The gear 37 is keyed to the sleeve on the shaft 20, andthe gear 38 is revolubly mounted on said sleeve. The sleeve mounted uponthe shaft 20 differs from the sleeve 27, in that it has two squareportions, one of each of which is adapted to lie upon each side of thegear 38. A clutch member 39 is disposed upon the square portion of thesleeve intermediate the ends thereof, and a reverse clutch member 4-0 ismounted upon the square end of the sleeve adapted to extend beyond thegear 38. The gear 38 has formed upon its opposite sides, a series ofteeth a1 and 42, constructed as are the teeth on the gear 31. The teeth41 are adapted to mesh with the teeth on the clutch member 39, duringthe time when the teeth 33 on the gear 31 are out of engagen'ient withthe teeth on the clutch member 29.

Each clutch member is revolubly mounted within a band bearing 43, havingstud bearings 44 extending therefrom. Means are provided to retain theclutch members in such positions that the teeth thereof will not engagethe teeth on the gears 31 and 38. This arrangement will be explainedhereafter.

The shaft 20 is mounted upon suitable bearings which in turn, aremounted upon the casing 12, in substantially the same manner as aremounted the bearings supporting the shafts 21. The stud shafts 45 aremounted in the lower part of the casing below and parallel with theshafts 20 and 21, and have mounted upon them combined spur and bevelgears 46. The spur teeth of these gears intermesh with one another, andalso engage, one with the teeth of the gear 30, and the other with theteeth of the gear 37. The bevel gear portions of the gears 16 engage thebevel gears 47 mounted upon vertical shafts 18 mounted in suitablebearings upon the casing. The

upper ends of the shafts d8 extend from the casing and have mounted uponthem a coupling 19 of a universal joint. From the foregoing, it will beapparent that motion from both of the gears 31. and 33 may betransmitted jointly to both of the bevel gears 47.

A tube shaft 56, parallel with the shafts 20, 21 and 45, is mounted uponthe casing. and extends through the chamber 2-.t, and has formed in it aperforation .ii and longitudinal slots 52 and Tnteriorly to the shaftand extending longitiulinally thereof, is a rod 5% having a bifurcatedend and a threaded end 56. A pin 57 extends through the perforation 51,in the tube shaft, and extends between the branches of the bifurcatedend of the red. A shoulder 58 is formed at the junction of thebifurcated end of the rod with the central portion of the rod. A block59 is slidably mounted upon the rod 5 1 and has extending from it, pins60 which extend through the elongated slots 52 in the tube shaft. A forkor yoke 61 is slidably mounted upon the exterior of the tube shaft, andis secured to the block 59, by means of the pins 60. The stud bearing Hon the band bearings mounting the clutch members engage the fork. Asecond block 62 is mounted upon the rod 5 1 and is in like mannerconnected with the yoke or fork 63 mounted upon the exterior of the tubeshaft. The yoke or fork 61 has pivotally mounted upon its opposite ends,the clutch members 29 and 35). The fork 63 has pivotally mounted uponits one end the clutch member 40, the other end of the fork beingpivotallv mounted upon the arm 6-1; extending from the plate 65 mountedupon the tube shaft 50. The plate has formed upon it. opposite to thearm 64, the lugs 66 adapted to engage the fork 61 on the op positesidesof the pivotal mounting of said fork upon the tube shaft, wherebythe parts 'may be positioned as shown in Fig. 1.

The rod 5 1, contained within the tube shaft has mounted adjacent itsthreaded end, an abutment block 67, between which abutment block. andthe block 62 is mounted aspring 68. The lock nuts 69 mounted upon thethreaded end of the rod 54L are employed to adjust the tension of thespring 68 upon the blocks 67 and 62. The block 59 engages the shoulder58 on the rod, and the efore is acted upon by the spring 67. Tu order toprovide ready access to the lock nuts 69, the end of the tube shaftextending from the casing, has mounted upon it a cap '70 which may beremoved in order to adjust the lock nuts 69. The uncap ed end of thetube shaft extends from the other end of the casing. and is operativelyconnected with a lever 71, whereby the tube shaft may be reciprocated inthe direction of its length. The reciprocation of the tube shaft isemployed to movethe clutch members into engagement with the gears 31 and38.

The couplings a9 mounted upon the upper ends of the vertical shafts 48are each adapted to have mounted upon them, complement-ary couplings,the two couplings being adapted to form part of a universal joint. Eachof such complementary couplings (not shown) may be adapted to seat intoan angular socket for completing such universal joints.

The couplin 26 in like manner maybe provided with a complementarycoupling member for providing a universal joint, said universal jointsbeing connected to the mechanism to be driven through the transmissionmeans.

Suitable means, such as a notched plate 72, shown adjacent the lever 71.may be em ployed with said lever to lock it inthe various positions, bymeans of an ordinary plunger 78 on the, lever 71. which. may engage thenotches in the plate 72. The plate 72 has disposed within it threenotches, whereby, through the agency of the lever and plunger thereon,the tube shaft may be retained in such positions that the clutch membersmay be held in any one of three positions; first, wherein all the clutchmembers are out of engagement with the gears 30 and 31; second, whereinthe clutch members 29 and 39 may engage the gears 31 and 88; and third,wherein the clutch member 40 may engage the gear 38. The lever 71 ispivotally mounted upon a transverse shaft 74L which is pivotally mountedupon the exterior of the casing. An arm 75 is connected with the tubeshaft by means of a link 76 which is pivotally connected with the arm75. The operation of the device is as follows:

When the parts are in the positions as shown in the drawings, the rack11 is free to be reciprocated, and to thereby revolubly actuate thegears 88 and 31, without imparting any motion to the universal joints.Assuming now that the rack 11 is being reciprocated, and that the lever71 is actuated so as to move the tube shaft 50 in such direction thatthe cap is moved farther from the casing, than is shown in Figs. 1 and4, wherefore the clutch members 29 and 39 assume such positions thattheir respective teeth may engage the teeth upon the gears 31 and 88respectively. The yoke 61, because of its pivotal mounting upon the pins60, and because of the action of the spring 68 upon said pivotalmounting, causes the clutch members 29 and 39 to be alternately movedinto and out of engagement with the gears 31 and 38 respectively. Inthis way motion is transmitted first from gear 31, to the sleeve 2'7, tothe gear 30,

and then. to the combined lever and spur gears 46 from which. theuniversal joints are actuated, and then after the rack has completed'itsstroke in one direction, and the clutch member 29 is disengaged from thegear 31, the gear 31 is free to be revolubly actuated in an oppositedirection. without effecting the movement of the sleeve 27,

while the gear 38 is imparting motion' throu h its com alementar clutchmember n b w 09 to the sleeve mounting, the gear 38 and from this sleeveto the gear 37, and to the joint 26. If for any reason,-it is desired toreverse-the direction of the rotation, the lever 71 is actuated so as tomove the tube shaft 50 to its opposite limit, wherefore the clutch.members 29and 39. are disengaged from the gears 31 and 38, and theclutch member i0 is moved into engagement with the gear 38. The yoke 63,together with the spring 68, actuates the clutch member 4:0 in the samemanner in which the clutch members 29 and 39 are actuated. It should beobserved that during the reverse operation, there is an intermittentmotion trans mitted to the universal joints. This intermittent motion issufficient to provide necessary movement of a stoker mechanism, whichmight be attached thereto; such reverse motion being necessary only topermit the removal of obstructions from such stoker mechanism. It shouldbe observed that with this arrangement it is possible to'discontinue themovement of one of the universal oints, while the others are operativeeither in a forward or reverse direction.

What I claim is:

1. In a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed transversely of the line of reciprocationof the rack, a sleeve mounted on each of the parallel shafts, a gearrevolubly mounted upon each of the sleeves and engaging the rack, gearsfixedly mounted on each of the sleeves and being adapted to transmitmotion one to the other, means adapted to transmit motion from one ofthe first mentioned gears to its supporting sleeve upon the forwardmovement of the rack and to transmit mot-ion from the other of the firstmentioned gears to its respective sleeve upon the return movement of therack.

2. In a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed transversely of the line of reciprocationof the rack, a sleeve mounted on each of the parallel shafts, a gearrevolubly mounted upon each of the sleeves and engaging the rack, gearsfixedly mounted on each of the sleeves and being adapted to transmitmotion one to the other, means adapted to transmit motion from one ofthe first mentioned gears to its supporting sleeve upon the forwardmovement of the rack and to transmit motion from the other of the firstmentioned gears to its respective sleeve upon the return movement of therack, and means adapted to transmit motion from the sleeves to theparallel shafts.

3. In a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed tranversely of the line of reciprocationof the rack, a sleeve mounted revolubly on each of the parallel shafts,a gear mounted revolubly on each sleeve and engaging the rack andadapted to be revolubly actuated thereby, clutch teeth formed on thesaid gears, gears fixedly mounted upon the sleeves adapted to transmitmotion one to the other. clutch members slidably mounted upon thesleeves and splined thereto and being adapted to be moved intoengagement with the clutch teeth on the first mentioned gears, and meansadapted to move the clutch members into driving relation with the firstmentioned gears in alternate sequence upon the change of stroke of therack.

4.111 a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed transversely of the line of reciprocationof the rack, a sleeve mounted revolubly on each of the parallel shafts,a gear mountedrevolubly On each sleeve and engaging the rack and adaptedto he revolubly actuated thereby, clutch teeth formed on the said gears,gears fixedly mounted upon the sleeves adapted to transmit motion one tothe other, clutch members slidably mounted upon the sleeves and splinedthereto and being adapted to be moved into engagement with the clutchteeth on the first mentioned gears, means adapted to move the clutchmembers into driving relation with the first mentioned gears inalternate sequence upon the change of stroke of the rack, and means totransmit motion from the sleeves to the parallel shafts.

5. In a pmver transmission mechanism the combination of a reciprocatingrack, paral lel shafts disposed transversely of the line ofreciprocation of the rack, sleeves mounted revolubly upon the shafts,gears mounted revolubly upon the sleeves and engaging the rack andadapted to be revolubly actuated thereby, clutch members splined uponthe sleeves adapted to be moved into driving engagement with the saidgears,

gears fixedly mounted upon the sleeves and being adapted to transmitmotion one to the other, a tube shaft parallel with the first mentionedshafts, means adapted to longitudinally reciprocate the tube shaft, andmeans mounted upon the tube shaft adapted to alternately move the clutchmembers into and out of operative relation with the first mentionedgears in alternate sequence upon the change of the stroke of the rack.

6. In a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed transversely of the line of reciprocationof the rack, sleeves mounted revolubly upon the shafts, gears mountedrevolubly upon the slee es and engaging the rack and adapted to berevolubly actuated thereby, clutch members splined upon the sleevesadapted to be moved into driving engagement with the said gears, gearsfixedly mounted upon the sleeves and being adapted to transmit motionone to the other, a tube shaft parallel ith the first mentioned shafts,the tube shaft having a slot therethrough, a block mounted within thetube shaft, pins mounted upon the block and extending through the slotsin the tube shaft, a fork pivotally mounted upon the pins and supportingthe clutch members upon its oposite ends, and means within the tubeshaft operative upon the block adapted to alternately move the clutchmembers into operative engagement with the first men tioned gears inalternate sequence upon the change of movement of the rat-l5.

7. In a power trai'isniission mechanism the combination of areciprocating rack, paral lel shafts disposed transversely of the lineof reciprocation of the rack, sleeves mounted revolubly upon the shafts,gears mounted revolubly upon the sleeves, clutch menr bers splined uponthe sleeves and adapted to be moved into engagement with the gears andto transmit motion therefrom to the sleeves, gears fixedly mounted uponthe sleeves adapted to transmit motion one to the other, a tube shaftparallel with the first mentioned shafts and having slots therein, a rodwithin the tube shaft, blocks slidably mounted upon the rod, pinsmounted on the blocks and extending through the slots in the tube shaft,a yoke mounted slidably upon the exterior of the tube shaft andpivotally mounted upon the pins extending from one of the blocks in thetube shaft, the yoke having mounted upon its opposite ends the clutchmembers mounted on the first mentioned shafts, and 'yieldable meansoperative upon the blocks adapted to cooperate with the yoke and theclutch members in alternately moving opposite clutch members intodriving engagement with their respective cooperating gears.

8. In a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed transversely of the line of reciprocationof the rack, gears revolubly mounted upon the parallel shafts engagingthe rack adapted to be revolubly actuated thereby, clutch memberssplined upon the parallel shafts adapted to be moved into drivingrelation with the gears and to thereby transmit motion from the gears tothe shafts, gears fixedly mounted upon the shafts in driving relationwith one another, a slotted tube shaft extending parallel with the firstmentioned shafts, a rod mounted within the tube shaft having abifurcated end and a threaded end, a shoulder formed on the rod at thejunction of the bifurcated end with the intermediate portion of the rod,a block slidably mounted upon the rod and adapted to abut the shoulderon the rod, a second block mounted upon the rod intermediate its ends,pins on the blocks extending through the slots in the tube shaft, anabutment block adjustably mounted on the rod adjacent the threaded endthereof, means yieldingly spacing the second mentioned block and theabutment block, a pin extending through the tube shaft lying between thebranches of the bifurcated end of the rod, forks pivotally mounted uponthe pins extending from the blocks, the fork mounted upon the firstmentioned block having mounted upon each of its opposite ends one of theclutch members splined upon the parallel shafts, the fork mounted uponthe second mentioned block having its one end pivotally mounted upon thetube shaft and having mounted at its other end a reverse clutch membermounted upon one of the parallel shafts, and means to longitudinallyreciprocate the tube shaft whereby the clutch members mounted upon thefirst mentioned fork may be moved into driving engagement with the firstmentioned gears, the clutch member mounted upon the second mentionedfork being moved into engagement with one of said first mentioned gears,and whereby the clutches may be position-ed out of engagement with saidfirst mentioned gears.

9. In a power transmission mechanism the combination of a reciprocatingrack, parallel shafts disposed transversely of the line of reciprocationof the rack, gears mounted revolubly on the shafts engaging the rackadapted to be revolubly actuated by the rack, gears fixedly mounted uponthe shafts, stud shafts mounted in parallelism with the first mentionedshafts, a combined spur and bevel gear mounted on each stud shaft, thespur teeth thereof engaging the gears fixed upon the first mentionedparallel shafts and engaging one with another, shafts disposed at anangle to the parallel shafts, beveled gears upon the last mentionedshafts engaging the beveled gears formed on the combined spur and bevelgears, and means to alternately fix upon the first mentioned parallelshafts the gears revolubly mounted thereupon at the change in stroke ofthe rack.

l0. a power transmission mechanism the combination of a casing, a wayformed Within the casing,-a rack housing mounted removably within theway in the casing and being adaptedto besecured upon the casing, thehousing having a way therein, a rack adapted to be reciprocated in theway, parallel shafts disposed transversely of the line of reciprocationof the rack, gears mounted revolubly on the shafts engaging the rackadapted to be revolubly actuated by the rack, gears fixedly mounted uponthe shafts, stud shafts mounted in parallelism with the first mentionedshafts, a combined spur and bevel gear mounted on each stud shaft, thespur teeth thereof engaging the gears fixed upon the first mentionedparallel shafts and engaging one with another, vertical shafts disposedat an angle to the parallel shafts, beveled gears upon the lastmentioned shafts engaging the beveled gears formed on the combined spurand bevel gears, and means to alternately fix upon the first mentionedparallel shafts the gears revolubly mounted thereupon at the change instroke of the rack.

11. In a power transmission mechanism the combination of a reciprocatingrack, a shaft mounted transversely of theline of re ciprocation of therack, a gear mounted revolubly on the shaft engaging the rack, a clutchmember splined upon the shaft, complementary teeth on the clutch memberand on the gear adapted to bind the clutch member and gear when the gearmoves in one direction and to disassociate themselves when the gearmoves in the opposite direction, a tube shaft parallel with the firstmentioned shaft and having an elongated slot extending longitudinallythereof, a block mounted slidably within the tube shaft, a pin extendingthrough the slot in the tube shaft, a fork mounted intermediate its endsand pivotally upon the pin, and supporting the clutch member at one ofits ends, a pivotal mounting for the other end of the fork, and meansoperative upon the block yieldingly resisting movement of the block.

12. In a power transmission mechanism the combination of a reciprocatingrack, a shaft mounted transversely of the line of reciprocation of therack, a gear mounted revolubly on the shaft engaging the rack, a clutchmember splined upon the shaft, complementary teeth on the clutch memberand on the gear adapted to bind the clutch member and gear when the gearmoves in one direction and to disassociate themselves when the gearmoves in the opposite direction, a tube shaft parallel with the firstmentioned shaft and having an elongated slot extending longitudinallythereof, a. block mounted slidably within the tube shaft, a pinextending through the slot in the tube shaft, a "fork mountedintermediate its ends and pivotally upon the pin and supporting theclutch member at one of its ends, a pivotal mounting for the other endof the fork, means operative upon the block yieldingly resistingmovement of the block, and means to move VILLIAM T. HANNA.

